1024789 has 4 divisors (see below), whose sum is σ = 1052524. Its totient is φ = 997056.

The previous prime is 1024783. The next prime is 1024799. The reversal of 1024789 is 9874201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 400689 + 624100 = 633^2 + 790^2 .

It is a cyclic number.

It is not a de Polignac number, because 1024789 - 2⁵ = 1024757 is a prime.

It is a Duffinian number.

1024789 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1024789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1024783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13812 + ... + 13885.

It is an arithmetic number, because the mean of its divisors is an integer number (263131).

2^1024789 is an apocalyptic number.

It is an amenable number.

1024789 is a deficient number, since it is larger than the sum of its proper divisors (27735).

1024789 is an equidigital number, since it uses as much as digits as its factorization.

1024789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27734.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 1024789 is about 1012.3186257301. The cubic root of 1024789 is about 100.8195647859.

The spelling of 1024789 in words is "one million, twenty-four thousand, seven hundred eighty-nine".